Hole saw



1. Hole saw

1.1 is a perspective view of a hole saw embodying my new design;

1.2 is a right side elevation view thereof;

1.3 is a left side elevation view thereof;

1.4 is a front elevation view thereof;

1.5 is a rear elevation view thereof;

1.6 is a top plan view thereof; and

1.7 is a bottom plan view thereof.

CLAIM The ornamental design for a hole saw, as shown and described.